//public partial class HotKeyWin : Window // WindowStyle="ToolWindow"

public partial class NotifyIconWrapper : Component
{
    private HotKeyWin hkeyWin = new HotKeyWin();

    public NotifyIconWrapper()
    {
         hkeyWin.Show();
         hkeyWin.Closing += new CancelEventHandler(hkeyWin_Closing);
         hkeyWin.Hide();
    }

    void hkeyWin_Closing(object sender, CancelEventArgs e)
    {
         Console.WriteLine("hkeyWin_Closing enter");
         e.Cancel = true;
    }

    private void contextMenuStrip2_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
    {
         if (e.Alt) hkeyWin.Activate();
    }
}

private void Form1_Load(object sender, EventArgs e)
    {
        this.Activated += new EventHandler(Form1_Activated);
    }

    void Form1_Activated(object sender, EventArgs e)
    {
        string iconPath = "some file system path";
        notifyIcon1.Icon = new Icon(iconPath);
    }

public mainForm_keypressed(object sender, //eventargs
{
  if(_hidden && //Keystroke detection)
  {
    e.Handled = true;
    return;
  }
}

private void myMenuTray_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
    if (e.KeyCode == Keys.Menu && e.KeyValue == 18 && e.Alt)
    {
        MessageBox.Show("");
        MessageBox.Show("YOU CAN'T CLOSE HERE WITH ALT-F4");
        return;
    }
}